2
There is not an entity to import RMAs. The entity ReturnOrderHeaderEntity has ReadOnly=true
The suggestion has been to create a new custom data entity. Checking instead if the built-in entity can be made to support instead/update.
STATUS DETAILS
Completed

Administrator on 10/25/2022 12:10:49 PM
Thank you very much for your input. As part of version 10.0.31, new V2 and CDS return order entities have been released with write capabilities.